SLDL3500 RF Admittance Switch

The SLDL3500 RF Admittance Switch, also known as the CapDetect RF admittance switch, measures the admittance value between the center rod and the installation wall using high‑frequency signals, so as to determine whether the measuring probe is covered by material. The CapDetect system adopts three‑terminal technology and a five‑layer concentric structure to eliminate the influence of cable temperature effects and mounting capacitance accumulation on measurement accuracy. The CapDetect series includes three models: the SLDL3510 standard type, the SLDL3520 non‑adjustable type, and the SLDL3530 flat type.

Product Introduction of SLDL3500 RF Admittance Switch

Solidat Applied Technologies Ltd. is a leading manufacturer and supplier of the SLDL3500 RF Admittance Switch in China. We also provide professional customized services to meet different application requirements. Customers are welcome to purchase high-quality SLDL3500 RF Admittance Switch products from our stock, and contact our factory for quotations. We offer reliable service and competitive pricing for global clients.

he CapDetect radio frequency admittance switch detects the admittance value between the center probe and the mounting wall via high‑frequency signals to judge whether the probe is covered by materials. With three‑terminal technology and a five‑layer concentric structure, the SLDL3500 RF Admittance Switch effectively compensates for interference caused by cable temperature changes, installation capacitance, and material buildup on the probe.

Features of CapDetect SLDL3510 RF Admittance Switch

1.CapDetect technology effectively prevents interference from material buildup on the probe and installation capacitance effects.

2. The SLDL3510 features a self‑learning function that intelligently identifies environmental changes and automatically adjusts accordingly.

3. It has strong versatility and can measure various conductive and non‑conductive media, including liquids, viscous materials, particles, powders, and fly ash.

4. The SLDL3520 is fully self‑tuning and ready for immediate use after installation.

5. It can withstand temperatures up to 815°C, making it suitable for a variety of harsh working conditions.

. Multiple output options are available: relay output (DPDT/SPDT)/non‑contact switch, transistor output, two‑wire output (8mA/20mA), Namur output, etc.

7. Equipped with 1000V spark protection, surge suppression, and 4kV/8kV anti‑static protection.

8. The power supply range covers 21–35VDC and 30–265VAC, with a power design adaptable to various power environments.

9. The SLDL3530 features a flat, flush‑mount design that can be installed directly against the wall, effectively preventing mechanical damage.

10. The SLDL3500 RF Admittance Switch supports both liquid and solid level measurement.

Applications of SLDL3500 RF Admittance Switch

•Liquid: Conductive liquids or insulating liquids (including liquefied gases)

• Pulp: Conductive and insulating pastes and slurries

• Particles: Grains, plastic sheets, coal, and other bulk materials

• Interface: Interface detection between two liquids with different dielectric constants

• Powder: Plastic powder, cement, fly ash, and other fine materials